US Patent 7366956 Detecting data races in multithreaded computer programs

In one aspect, a value of a variable shared by multiple threads for executing the program code is stored in a thread-local variable. A data race condition is detected based on a comparison of values of the shared variable and the thread-local variable. Detection of the data race condition is reported. In another aspect, a machine-readable instruction to store in a thread-local variable a value of a variable shared by multiple threads for executing the program code is generated. A machine-readable instruction to detect a data race condition based on a comparison of values of the shared variable and the thread-local variable is generated. The machine-readable instructions are stored in a machine-readable medium.